Corporated



Dec. 27, 1927. 1,654,236

G. w. BINNS ROLL GRINDING MACHINE Filed June 9. 1927 2 Sheets-Sheet l @Kw4/'w Gnome A D@n 27, 1927.

G. W. BINNS ROLL GRINDING MACHINE Filed June 9. 1927 2 Sheets-Sheet 2 gmmm 26a/m" W WW Patented Dec. 27, 1927.

UNITED STATES GEORGE W. BINNS, OF CINCINNATI, OHIO,

ASSIGNOR TO CINCINNATI GRINDERS IN- CORPORATED, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

ROLL-GRINDING MACHINE.

Application filed .Tune 9,

This invention relates to improvements in roll grinding machines and has particular reference to a machine for production ot arcuate or barrel shaped rolls.

One ot the objects ol the present invention is the provision ot' a production machine ot' the ccnterless type tor rapid automatic grinding ot what are commonly termed barrel shaped rolls tor roller bearings or the like.y having a larger central than terminal diameter.

A further object ot the present invention is the provision oi a roll grinding machine which shall he generative in its action, thus tending to maintain to a maximum degree the etticient operation oi' the grinding wheel and eliminate the necessity ot `frequent truing present in ordinary Vt'orrn grinding.

Another object ot' the present invention is the provision oi a machine for production ot' work ol the general nature above mentioned, which through utilization ot a double supply mechanism will perform substantially continuous grinding for the attainment ot machine production.

Other ohjects and advantages of the present invention should he readily apparent by reference to the following specication taken in conjunction with the accompanying drawings, audit will hc understood that l may make any modifications in the specilie structural details ot' the embodiment chosen for purposes ot' illustration within the scope ot' the appended claims. without departing from or exceeding the spirit ot the in vention.

Figure 1 is a trent view ot a machine einbodving my improvements.

Figure 2 is a horizontal sectional view thereot.

Figure S is a 'fragmentary view ot the main slide and certain of the parts asso ciated therewith.

Figure 4- is a vertical section as on the line l---i ot Figure 1.

Figure is a vertical section through the magazine and associate parts as on the line of Figure 3.

Figure G is a section on line (-t of Figure 5. and

Figure 7 is a perspective view ot the work rest blade and support.

.ln the drawings the numeral 10 designates the base or hed of a machine ot the general centerless grinder type7 having mounted thereon the slide 11 supporting the grinding 1927. Serial N0. 197,740.

wheel 12 disposed within the guard 13. In and out movement otl this wheel may be eltected through the medium ot hand wheel 14.

The grinding wheel is t'ormed with an arcuate 'tace 15 as clearly illustrated in Figure 2 'for example, this face having a transverse curve complementary or controgeneric to that to be produced on the finished work pieces 16.

It will be understood that in grinding otl barrel shaped work pieces 1G as shown, that it is impossible to pass these pieces directly through a centerless grinder as is done in the grinding oi" ordinary cylindrical rollers. The purpose thereiore oi the present invention is to provide a method of grinding such rolls and an apparatus tor carrying out the method which will 'facilitate the most rapid and at the same time accurate production thereo t. In the. attainment ot this result the bed 10 is provided with a guidewav lor the slide 17, disposed in opposition to the grinding wheel slide 11 and adjustable as hv screw 1S and hand wheel 19. This slide is ilormed with a trunuion or pivot as at 2O lor the oscillatable supporting plate 21v and is further 'formed with the cam slot 22 within which rides the actuating eccentric or cam disk 23. A

The plate 2l is 'further provided with ways 2l slidably supporting the regulating wheel unit 25.

This unit as is shown in detail in Figure includesl a suitable self-contained actuating motor QG. coupled through a train of gearing or the like 27,- with the transverse shaft 2S, This shaft has a drive sprocket 29 coupled h v chain with a sprocket 31 on the regulating wheel shaft 32. This shaft supports the regulating wheel 33 in opposition to the grinding wheel 12. Like the grinding wheel the regulating wheel has its tace toi-med with a transverse groove or curve as at 34.

In addition, shaft Q8 is provided with a. bevel gear 235 in turn meshing with gear 3G on shat't This shaft hears pinion 38 3T. dri ing Igear 39 ot' the oscillation controlling sha't't il).

Shaft 40 is suitably journalled in ythe unit 25 and bears on its lower end the eccentric Q3, Conseipiently, as the motor 26 is oper ated to rotate the regulating wheel it will simultaneously impart a slow rotary move- Lil) ing Wheel unit and work "est jointly7 lated across nient to shaft d0 and eccentric Sinne ee-v centric 23 just lits between the side walls Lll and ot the slot 22, its rotation `will canse a `lateral swinging movement ot the plate 2l and regulating" n'heel unit about trunnion es a tentern The radius through whicl the unit swings it will oe understood may he Varied loy haci; and forth shitting et the regulating Wheel unit 25 on supporting plateit through actuation ot 4adjlisting screw Consequently, a `'number ot dili'erent .radii oit roll may loe satisfactorily produced on the saine inaehine by ditl'erent settings thereof. 'llo permit of this adjustment it will he noted that intermediate plate 2l. is torined with an elongated slot del through nf'hich sliet't fr() deponds. ildditionriily7 the ani slot 22 is ot sufiieient length that desired hach and Yl'ortli adjustment of unit 2:3 may l e niade and ao,- ditionally that the eccentric 23 may 'freely rotate in' contact the slot 22. Consequently, the rotation ogt nieinoer 23 will impart e continuous swinging or oscillatory 'inoreinent to the iieifulating wheel Withouteffecting` either the rotative drive theretoror kWithout tending to lineart any in and ont moi/'ornent to said Wheel.

'lfn the ordinary forni ot eenterless grinder ar stationary work rest is provided and the work is either fed axially alongthis work rest as in the oase oit through toed grindiiig or reinains'iniinied position on the work restasin inteed grinding, the Wheels ordinarily being separated to permit of reinoval and in sertion ol 'Work pieces.

'The present invention, however, cont inplates atteininent'ot the several advantaees o through eedgrinding `n Connection with Work which has hitherto been considered inipossible to grind hy such methods. ln the aecon'iglislnnent oit this result there is seeuredto theroseilleting plate 2l av Worl rest support ll5 haring set into its upper eid Work rest blade This lilade has terminal Work engaging' portions el? and L8 :tor eulostantiel engine-nent with the ends of tne Werl; piece he ie operated upon and has it upper lace provided with a Combined arcor` and nngled recess eli). rlllie shepe of this reycess as will [nolfiahly he liest understood hy reference to Figures 4f and "l such that loirV gitudinelljfY it corresponds substantially to the are oteurvature of the 'tace ot then'orl: 'and transifersely it is inclined in the direc:- tion of the regulating 'Whe/eh so that the Weight o'll the wor i piene tenes to 'erge the Work and hold it in Contact with the regulating Wheel.

By sol forming andV inountf"l the Werl; rest blade or support, a Work piece may he placed on the surtaee i9 between the end gagging n'ieinhers l? and i8 and the regula of; the tace ot the grinding Wheel, the endineinbers insuring movement ot' the ieee Work niece with 'the rest the sha De. :ind no- 7.

tion or the rest producing proper Contact with the grooved lace olf the regulating wheel aad the oscillation causing; a generaticn oll the Qroper enrve on the work piece wth an automatic maintenance ol the deered curve on the tare olf the grinding :e ationsh i is inost clearly ,shown in Figure (3 troni which it will he noted that there is pivotrd to the side of the magazine. e retaining); 'linger 52 having a portion 53 projectable into the nati-i oi' movement et the Work pieces as the adjustable ehutnient sereni on'its loi end contacts with the side olf the Work hiade vrihis 'l'ingrerlorks the series olf rolls in the/'magazine against donf'nwznd more nieni except as resiieets the lowerinost roll 1 'i at the :saine tinie prevents amv upward i, eine t of die lon'erniost roll.

rlflie purpose ot this should be liest apparent hy reterenceto Figures land lt will here he notedthat the Work rest blade and support are drilled kas at to receive the ejector rod 56, having@ the flattened head 5T at its upper end preventing rotation thereo'l. This heed hasa ly heifelled surface Je disposed in opposition to the angled ton ot the worin: rest. Suitable nieehanisin snch a Cain track 39 with risers GO and 6l niai7 he employed to inipart :i 'vertical lnovenient to the ejeetor.

the regulating; wheel ningl to one sii (if on the lower end oi the ej( 'i tact 'with one oit the riz-ers7 nnivingr'the ejector upward, -While at the saine tnne nnger 53 will he projected to `n'event rising' 1novenient olt the series ot rolls in the niagas'iine, While leaving the lowenniost roll free. This lowerinost roll nornuilhT supported at the oase oit the magazine :is hy latch G8 will he engaged by the bottoni roll as it is pressed upward on i'iiovenient ot the ejector. The combined restraining action ot this lower roll and the angle ton 58 oit the ejector 'will canse the lower or eon'iploted Werl; piece to he later-all,v shifted as tmrrzrd the lett in Fig'- nle :i olii1 the Work resiY when it in ay drop suitable container. it the saine tiine o vement ot the va'orl piece `will engage ever `portion Gilo'l latch 63, swinging it outward against spring G5 and releasing the werinost Vork' piece. .its a result this roi-l: piece will tend to-drop down beyonr'l llt] l. Liv

the completed work just being ejected and below latch 63, so that when the ground work piece is ejected the new work piece will be in position on the work rest blade between members e7 and i8 i-'or grindingl on the reverse stroke. At the inception of the reverse swinging movement the rest and roll will be carried away from the position shown in Figures 5 and 6 and at the same time screw 54 will be disengaged, so that spring 66 maj7 reversely rock the arm and release the rolls in the magazine, their downward movement being limited as indicated by latch 68.

ln the operation el? a machine of this type the grinding wheel is rotated at a high rate ot' speed for example live thousand feet surface speed per minute for the grinding and in a direction toward the work rest blade as indicated by the arrow in Figure l. At the same time the regulating wheel which is disposed in op position to the grinding wheel is rotated with its operative surface moving upwardly at the point ot engagement with the work as is also indicated by a suitable arrow. rthe oscillating regulating wheel carriage is so positioned that it carries the work back and forth across the face of the grinding wheel at the arc of curvature to be reproduced on the iinished work. This oscillatory movement is imparted through interengagement ot the eccentric Q3 with the walls il and 42 of the control slot .in slide li'. 'ihis movement will generate the desired curvature on the roll, maintaining the surtace ot the grinding wheel in proper condition 'tor continuous grinding without liability oit grooving or the like, or undue breaking down ot the wheel at certain points as is liable to occur with a direct infeed grinding operation where the engagement et various work pieces with the grinding wheel is duplicated.

lt will further be noted that in operation upon each lateral oscillation or swinging ol the regulating wheel a completed work piece is automaticalljT discharged and a new piece correspondingly automatically 'ted into the grinding throat, so that the machine substantially continuous in its operation, insuring maximum output.

l. A roll. grinding machine of the centerless type, including opposed grinding and regulating wheels and an intermediate work restA` the grinding wheel being formed with a transversely curved sui-tace to he reproduced on the work, and means tor imparting a joint swinging movement to the regulating wheel and work about the center of curvature on the face of the grinding wheel.

2. A roll grinding machine ot the character described7 including a grinding wheel, an opposed regulating wheel and an intermediate work rest, and means for swinging the regulating wheel and work across the face ot' the lgrinding wheel to generate the desired longitudinal curve on the work.

3. A grinding machine ot the centerless type, inehuling a grinding wheel, a regulating wheel and a swinging carriage for the regulating wheel, means for swinging the regulating wheel carriage, a work rest movable therewith for supporting work in the throat between grinding and regulating wheels and means for terminally engaging the work to insure synchronous movement of the work and work rest.

4. A centerless grinding machine, including a grinding wheel, an opposed regulating wheel and an intermediate work rest, magazines disposed at opposite sides of the grinding wheel, means for shitting the regulating wheel and work rest in an arcuate path concentric with the face ot the grinding wheel, an automatic means lor discharging a finished work piece and replacing it with a piece to he ground from the magazine at each stroke ot' the regulating wheel.

5. center-less grinder ot' the character described, including a bed or support, a grinding wheel adjustably mounted thereon, said grinding wheel having a transverseljv curved peripheral operative face, a regulating wheel unit mounted for arcuate swinging movement: on the bed and disposed in opposition to the periphery oiI the grinding wheel, and means `lor swinging the regulating wheel transversely ot' the operative face of thegrinding wheel.

t3. i eenterless grimler ot the character described, including a bed or support, a grinding wheel adjustably mounted thereon, said grinding wheel having a transverselyv curved peripheral operative tace, a regulating wheel unily mounted 'for arcuate swinging movement on the bed and disposed in opposition to the periphery of the grinding wheel, means lor swinging the regulating wheel transvers-eliv ot the operative face ol the grinding wheel, and means movable with the regulating wheel tor supporting a work piece in the throat between the grinding and regulating wheels during said swinging movement.

7. A centerless grinder of the character described, including a hed or support, a grinding wheel adjustably mounted thereon, said grinding wheel having a transversely curved peripheral operative face, a regulating wheel unit mounted for arcuate swinging movement on the bed and disposed in opposition to the periphery of the grinding wheeh means tor swinging the regulating wheel transversely olE the operative tace of the grinding wheel, means movable with the regulating wheel 'tor supporting a Work piece in the throat between the grinding and regulating wheels during said swinging llt) CII

la e

sin

ycurved peripheral operative tace, a regulating `wheel unit mounted ttor aroiiate sivinzg-A in@l movement on the bed and disposed lin opposition to the periphery ot the grinding' wheehmeans for swinging the regulating Wheel transversely ot the operative 'tace ot the grinding Wheel, n'ieans movable with the regulating` Wheel. t'or supporting a Work piece in `the throat betnf'een the grinding and regulating;- Wheels during said swinging movement, means` tor shitting; the grinding Wheel toward and from the regulatingy Wheel, and means 'for varying' the radius ot sivin'in ,1` movement ot the regulating; Wheel.

i). roll grinding machine ot the character described, including' a rotaryv grinding .vliccl and an opposed regulating wheel sliittable in an arcuate path transversely ot the rare ot the grinding' wheel, and n'ieans for varying;v the radius ot the path et shitting nnweinent oit the regulrdrin;v Wheel.

l0. t roll. grinding machine ot the chari actin' described, including; a rotary grinding; Wheel and an opposed reejulating vWheel shirt-able in an arcuate path transversely ot the `rce ot' the grinding Wheel, means For varying; the radius of' 7the path oit shitting* movement ot the regniating;` Wheel, and additional means Ytor adjustablf; varying` the separation oi? said Wheels il. nl roll grinding machine et the character described, including a rotar;7 grinding wheel and an opposed regulating Wheel sliit'talile in fan arcuate path transversely ot the tace ot the grinding Wheel, means for inn' the radius ot the path of shitting moi nent ot the regulating,l Wheel, Work snpu porting;v means shittable vviththe regulating wheel andV adapted to project into the throat between the `grinding; and regu]ating` Wheels, and means iter automatically ejecting a wol-lr piece :it the limit of movement oit the regulating wheel in one direction.

l2. il roll ,e ulinn machine oit the character describei, including` a rotary grinding Wheel and an opposed regulating'Wheel shittalile in an arcuate path tranwerseljv7 ot the ot the grinding; Wheelv` means :tor varyin the radius ot the path oit shittingmovein lnt o the regulating Wheel7 Werl; snpporting means sliitl'able with the regulaeine wheel and adapted to project into the throat, between the grinding and regulating Wheels, means for automatically ejecting a Werl; piece et the limit ot movement ot the regulatinevvhecl in one direction, and means jor automatically,7 supplying a new Work piece .and additional piece and substitiitinggl a ground as the iegulating;` Wheel swings bethe to the rest prior to the return Strolre of `the regulat-ing-` Wheel.

i3. fr centerless lgrinding.machin/aincluding a bed or support, a grinding Wheel earried thereby7 a slide mounted on the bed adjacent the grinding; Wheel and providing` a translatory pivot, a regulatinn` Wheel unit supported above the slide and oscillatable about the pivot and reciprocable relative to the pivot, and means for zmtomatically iinpnrting one et said inovei'nents to the regulating Wheel unit.

lli. fr centerless grinder tor the production et non-cylimirical bodies, incltuling sii-grind ing wheel and an opposed reejulating` Wheel, a vvorl; support associated with the reguletting wheel, and means tor generatively shitting the regulating' Wheel and Worlerest transverselgY of the ,tace ot the grinding wheel to control the generative production oit work pieces by the grindiugwheel.

15. ln a machine ot the character described, the combination with a bed or support, ot a regulatingiv wheel unit mounted thereon, bearing a regjulatinev wheel, a prime mover carried b v the unit, a regulating Wheel thereon, connections between the `prime inrnfer and regniating; Wheel iter rotating; the latter, means tor imparting an arcuate swinging' movement to the reignlating` wheel eminections between the prime mover and said means t'or `actuating the latter.

1G. .A center-less kgrinder of the c'l'iaracter described, including,` bed or support, i a grinding wheel carried therebyY and having transversely curved peripheral operative tace,: a regulating; Wheel unit carried bythe bed in, opposition to the grinding -Wheel and including a regulating Wheel and a Work support, means tor oscillating the regulating wheel across the face oit the grinding Wheel a path concei'itric with the transverse curvature ot' the grinding Wliee tacevand beyond the lateral limits thereof, andmeans for automatically ejecting a completed Work Work piece to be yond the lateral laceot the grinding Wheel.

. i'. in a machine oit the character .de scribed, the combination with a bed or support, ot a grinding Wheel carried thereby, having transversely curved operative tace, a regulating Wheel u1iit,.means intermediate regulating" Wheel, unit und bed supporting the unit tor arcuateoseillation trans versel'y ot the wperative tace/rot the grinding wheel, means 'for adjusting; the centerv ot oseillation with respect to the `@grinding` Wheel and additional means tor adjustii'ig the rege ulating` Wheel unit with resiliecls said center olf oscillation,

tu te ion); whereof l aliix mv signature.

GEQRGE lil. BJNNS. 

